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-rw-r--r--target/linux/brcm2708/patches-4.19/950-0123-lan78xx-Read-initial-EEE-status-from-DT.patch40
1 files changed, 40 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0123-lan78xx-Read-initial-EEE-status-from-DT.patch b/target/linux/brcm2708/patches-4.19/950-0123-lan78xx-Read-initial-EEE-status-from-DT.patch
new file mode 100644
index 0000000000..a1a9fa6c88
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.19/950-0123-lan78xx-Read-initial-EEE-status-from-DT.patch
@@ -0,0 +1,40 @@
+From 26c3806ff17c6a7ed61ba127af36271390e86c89 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Fri, 9 Mar 2018 12:01:00 +0000
+Subject: [PATCH] lan78xx: Read initial EEE status from DT
+
+Add two new DT properties:
+* microchip,eee-enabled - a boolean to enable EEE
+* microchip,tx-lpi-timer - time in microseconds to wait before entering
+ low power state
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/net/usb/lan78xx.c | 16 ++++++++++++++++
+ 1 file changed, 16 insertions(+)
+
+--- a/drivers/net/usb/lan78xx.c
++++ b/drivers/net/usb/lan78xx.c
+@@ -2657,6 +2657,22 @@ static int lan78xx_open(struct net_devic
+
+ netif_dbg(dev, ifup, dev->net, "phy initialised successfully");
+
++ if (of_property_read_bool(dev->udev->dev.of_node,
++ "microchip,eee-enabled")) {
++ struct ethtool_eee edata;
++ memset(&edata, 0, sizeof(edata));
++ edata.cmd = ETHTOOL_SEEE;
++ edata.advertised = ADVERTISED_1000baseT_Full |
++ ADVERTISED_100baseT_Full;
++ edata.eee_enabled = true;
++ edata.tx_lpi_enabled = true;
++ if (of_property_read_u32(dev->udev->dev.of_node,
++ "microchip,tx-lpi-timer",
++ &edata.tx_lpi_timer))
++ edata.tx_lpi_timer = 600; /* non-aggressive */
++ (void)lan78xx_set_eee(net, &edata);
++ }
++
+ /* for Link Check */
+ if (dev->urb_intr) {
+ ret = usb_submit_urb(dev->urb_intr, GFP_KERNEL);